Injection pump is replaced as an assembly. Take care not to lose any parts of the injection
Remove tube fitting (1) and oil seal (2) from fuel injector pump (3) using a 19 mm open end wrench.
Remove spring (4), shim (5), and filler (6) from tube fitting (1).
The spring, shim and filler, may drop out of tube fitting when you remove it and remain on
delivery valve. Both fittings are same.
Remove copper gasket (7) and delivery valve (8) from injector pump (3).
Repeat steps (1) through (3) to remove other injector side.
Compress springs (9) on push rod tube (10).
Remove three screws (11) and three washers (12) using a 6 mm hex head wrench.
Remove nut (13) and washer (14) using a 13 mm open end wrench.
Be sure to keep metal shims in proper order. These shims are available in three thicknesses and
are used to adjust injector timing (para 5-32).
Remove injector pump (3) and metal shims (15).
Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles, face mask, and
gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes and
don't breathe vapor. Do not use near open flame or excessive heat. The flashpoint for type I dry
cleaning solvent is 100°F (38°C) and for type II is 140°F (60°C). If you become dizzy while using
cleaning solvent, get fresh air immediately and get medical aid. If contact with eyes is made,
flush eyes with water and get medical aid immediately.
Clean all parts with dry cleaning solvent P-D-680.
Inspect parts for pits and corrosion.
Install delivery valves (8) and copper gaskets (7) in injector pump (3).
Install oil seals (2) on tube fittings (1).
Install fillers (6), shims (5), and springs (4) in tube fittings (1).
Install tube fittings (1) on injector pump (3) using a 19 mm open end wrench.